Add GitHub Actions test workflow and status badge

Author: christopherrobin

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: yarn
+      - run: yarn install --frozen-lockfile
+      - run: yarn test

README.md

@@ -2,7 +2,8 @@
 
 [![TypeScript](https://img.shields.io/badge/TypeScript-3178C6?style=for-the-badge&logo=typescript&logoColor=white)]()
 [![Node.js](https://img.shields.io/badge/Node.js-339933?style=for-the-badge&logo=nodedotjs&logoColor=white)]()
-[![Vitest](https://img.shields.io/badge/Vitest-6E9F18?style=for-the-badge&logo=vitest&logoColor=white)]()
+[![Vitest](https://img.shields.io/badge/Vitest-2dce6d?style=for-the-badge&logo=vitest&logoColor=white)]()
+[![Tests](https://github.com/christopherrobin/nuforc-scraper/actions/workflows/test.yml/badge.svg)](https://github.com/christopherrobin/nuforc-scraper/actions/workflows/test.yml)
 [![MIT License](https://img.shields.io/badge/license-MIT-333333?style=for-the-badge)](LICENSE)
 
 A Node.js/TypeScript scraper that collects UFO sighting data from the [National UFO Reporting Center (NUFORC)](https://nuforc.org) database.